1379993 has 2 divisors, whose sum is σ = 1379994. Its totient is φ = 1379992.

The previous prime is 1379981. The next prime is 1380007. The reversal of 1379993 is 3999731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 196249 = 1088^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1379993 - 2⁶ = 1379929 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1379993.

It is not a weakly prime, because it can be changed into another prime (1379923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689996 + 689997.

It is an arithmetic number, because the mean of its divisors is an integer number (689997).

2^1379993 is an apocalyptic number.

It is an amenable number.

1379993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379993 is an equidigital number, since it uses as much as digits as its factorization.

1379993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45927, while the sum is 41.

The square root of 1379993 is about 1174.7310330454. The cubic root of 1379993 is about 111.3334399065. Note that the first 3 decimals are identical.

The spelling of 1379993 in words is "one million, three hundred seventy-nine thousand, nine hundred ninety-three".